| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 239/553.3 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 2,707,616 | May 03, 1955 | R.J. Koch, R.P. Schad | Boring Head for Horizontal Drills in Water Collecting Devices | well digging or drilling tools | |